51421234252225 has 24 divisors (see below), whose sum is σ = 67513700141280. Its totient is φ = 38716795096320.

The previous prime is 51421234252181. The next prime is 51421234252243. The reversal of 51421234252225 is 52225243212415.

It is not a de Polignac number, because 51421234252225 - 2⁴⁵ = 16236862163393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49009974 + ... + 50048176.

It is an arithmetic number, because the mean of its divisors is an integer number (2813070839220).

Almost surely, 2^{51421234252225} is an apocalyptic number.

It is an amenable number.

51421234252225 is a deficient number, since it is larger than the sum of its proper divisors (16092465889055).

51421234252225 is a wasteful number, since it uses less digits than its factorization.

51421234252225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154769 (or 1154764 counting only the distinct ones).

The product of its digits is 384000, while the sum is 40.

The spelling of 51421234252225 in words is "fifty-one trillion, four hundred twenty-one billion, two hundred thirty-four million, two hundred fifty-two thousand, two hundred twenty-five".